Improvement in tension attachments for scroll-saws



J. R. VELLAOOTT. Tension-Attachment for Scroll-Saws.

No.196,955. Patented Nov. 6,1877

WITNESSES: 026K741 ATTORNEYS.

UNITED STATES PATENT O FICE.-

JAMES R. VELLAGOTT, OF BUFFALO, NEW YORK.

.IMPR OVEMENT IN TENSION ATTACHMENTS FOR SCROLL-SAWS.

Specification forming part of Letters Patent No. 196,955, dated November 6, 1877; application filed April 16, 1877.

To all whom it may concern:

Be it known that I, JAMES R. VELLAOO'TT,

' of Buffalo, in the county of 'Erie and State of,

travel on the under surface of the said curved levers and equalize the strain upon the saw.

Referring to. the drawing, A is a frame, of cast-iron or other suitable material, which is of sufficient width to receive the levers B, and is provided with two vertical arms for receiving the coil-springs O. The levers B are pivoted to opposite edges of the frame A, and are oppositely arranged with respect to each other.

The arms of the levers are arranged tangentially in relation to their pivots, and are placed with their concaved sides downward. Their free ends are drilled to receive the flexible link a, to the center of which a cord, strap, or'

This tension device is automatic in its and i justment, giving an equal strain upon the saw through its entire stroke, as the rollers follow the curved surface of the levers toward their fulcrums as they are drawn down.

Having thus described my invention, I claim as new and desire to secure by Letters Patent The curved levers B, elastic link a, stirrups D, rollers d, spring 0, and frame A, in combination, substantially as shown and described.

JAMES RICHARD VELLACQTT.

Witnesses:

J OSEPH NELsoN GREGORY, NATHANIEL HOWARD TUCKER, 

